@Ffion11 if it is the feed tomthe ONT you need to report the fault to Skywho will need to get Openreach out to fix the fault which will take a few days. However if its the cable from the ONT to the hub you can buy a repkacement from any hardware store or most supermarkets. Just look for an Ethernet cable you do not need anything fancy.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
